Ford recalled about 28,000 of its 2012-13 Edge crossover utility vehicles for possible fuel leaks on models equipped with the 2-liter 4-cylinder EcoBoost engine, according to a report posted on the National Highway Traffic Safety Administration website. The automaker said the fuel line pulse damper was not manufactured properly by a Michigan supplier, which could allow “fuel odor, seepage or a small fuel leak.”

While that could cause a fire, Ford said it was not aware of any fires, accidents or injuries related to the issue.

The action includes about 5,500 Edges from the 2012 model year that were recalled that year for the same problem. Ford said it was concerned that replacement fuel pulse dampers put on those engines were also defective and might develop leaks, although it had received no such reports.

Ford’s solution to the problem is to use a fuel line without the dampers. While such dampers can be used to make fuel flow more predictable, the soon-to-be-removed dampers are in a “low-pressure” location where their role was solely to help reduce noise, Kelli Felker, a spokeswoman for Ford, said in an interview. Consequently, she said, there will be no impact on the engine’s function.

While most major automakers, including General Motors, Chrysler, Honda and Toyota, announce recalls, Ford typically does not unless it deems a problem is so severe that owners should stop driving.

In other actions:

■ Ford recalled about 300 Explorer sport utility vehicles from the 2011-12 model years in the United States because a replacement steering gear might be defective, according to a report posted on the N.H.T.S.A. website. Ford said the system had a software fault that could result in the steering locking up, making the vehicle impossible to turn. However, the automaker said, it was not aware of such a problem occurring. The replacement gears were installed after Sept. 13.

Ford described its recall as voluntary, but once a manufacturer is aware of a safety problem it must – within five business days – inform the safety agency of its plan for a recall or face civil penalties.

■ After resisting a recall for two years, Ford says it will recall about 4,500 of its 2011 full-size vans because bubbles may form inside the windshield, reducing forward visibility. The models covered by the recall are the E-150, the E-250, the E-350 and the E-450, according to a report posted on the agency’s website.

Ford had asked the agency to be excused from the recall, saying the bubbles occurred only in hot weather and it had no reports of the driver’s vision being completely obscured. The agency recently ruled that the automaker must issue a recall.

■ N.H.T.S.A. said it upgraded an investigation into a possible fire hazard involving the vanity mirrors on as many as 593,000 Jeep Grand Cherokees from the 2011-13 model years. The investigation into the fires began in August, prompted by three complaints from owners about fires near the vehicle’s sun visors. In a new report, agency investigators say they have 52 reports about fires and are concerned about a possible electrical short involving the light in the vanity mirrors.

The agency said there were also three reports of injuries, although the seriousness of those injuries was not detailed. Consequently, the agency says, it is upgrading its investigation from a preliminary evaluation to an engineering analysis. The latter is more likely – but not certain – to result in a recall.

Chrysler engineers are conducting their own investigation as well as working N.H.T.S.A., Eric Mayne, a Chrysler spokesman, wrote in an email.